West Nile Virus in Wisconsin
Wisconsin has no recent West Nile Virus activity, but 14 alerts have been recorded historically.
Risk Level
🟢 Low
No cases reported in the past 30 days
Cases (30 days)
0
Total Cases
14
Counties Affected
8
Most recent West Nile Virus alert in Wisconsin: Oct 23, 2025
West Nile Virus Alerts in Wisconsin
Green Lake, Wisconsin
Oct 23, 2025 · active
1
confirmed
Grant, Wisconsin
Oct 14, 2025 · active
1
confirmed
Croix, Wisconsin
Sep 17, 2025 · active
1
confirmed
Clark, Wisconsin
Sep 12, 2025 · active
1
confirmed
Grant, Wisconsin
Sep 9, 2025 · active
1
confirmed
Iowa, Wisconsin
Oct 9, 2024 · active
1
confirmed
Clark, Wisconsin
Sep 19, 2024 · active
1
confirmed
Green Lake, Wisconsin
Sep 16, 2024 · active
1
confirmed
Washington, Wisconsin
Sep 13, 2024 · active
1
confirmed
Walworth, Wisconsin
Sep 12, 2024 · active
1
confirmed
Marquette, Wisconsin
Sep 6, 2024 · active
1
confirmed
Marquette, Wisconsin
Aug 30, 2024 · active
1
confirmed
Clark, Wisconsin
Aug 23, 2024 · active
1
confirmed
Marquette, Wisconsin
Aug 20, 2024 · active
1
confirmed
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